MultiVersus was the largest Steam release by Warner Bros.

Free fighting MultiVersus was the largest active player launch of Warner Bros. Games.

Open beta testing of the project on Steam started on Monday evening in the Americas, Europe, Australia and New Zealand.

By the end of the first night, the peak number of simultaneous players had reached 144,456 — at that time, the game was ahead of Apex Legends (118,887), Dota 2 (454,554) and Counter-Strike: Global Offensive (587,002), and only Lost Ark (268,988) was ahead.

LEGO Star Wars: The Skywalker Saga (82,517)Back 4 Blood (65,987)Middle-earth: Shadow of Mordor (48,668)Mortal Kombat 11 (35,147)Mad Max (33,356)Batman: Arkham Knight (27,406)Batman: Arkham Origins (25,017)Mortal Kombat X (15,743)Injustice: Gods Among Us Ultimate Edition (10,344)Gotham City Impostors: Free to Play Edition (7,249)The game is available on PC, PS5, PS4, Xbox Series X|S and Xbox One with full crossplay support between platforms.

At the launch, fighting offers a roster of 17 characters (the rotation of "free" characters has already been confirmed), nine cards and eight modes.